Results 31 to 40 of about 11,320,320 (289)

Maximum entropy production and plant optimization theories [PDF]

open access: yesPhilosophical Transactions of the Royal Society B: Biological Sciences, 2010
Plant ecologists have proposed a variety of optimization theories to explain the adaptive behaviour and evolution of plants from the perspective of natural selection (‘survival of the fittest’). Optimization theories identify some objective function—such as shoot or canopy photosynthesis, or growth rate—which is maximized with respect to one or more ...
openaire   +3 more sources

Nonequilibrium thermodynamics of the asymmetric Sherrington-Kirkpatrick model

open access: yesNature Communications, 2023
Most natural systems operate far from equilibrium, displaying time-asymmetric, irreversible dynamics characterized by a positive entropy production while exchanging energy and matter with the environment.
Miguel Aguilera   +2 more
doaj   +1 more source

The Role of Vegetation on the Ecosystem Radiative Entropy Budget and Trends Along Ecological Succession

open access: yesEntropy, 2014
Ecosystem entropy production is predicted to increase along ecological succession and approach a state of maximum entropy production, but few studies have bridged the gap between theory and data.
Paul C. Stoy   +4 more
doaj   +1 more source

Entropy production in thermal phase separation: a kinetic-theory approach [PDF]

open access: yesSoft Matter, 2019
Entropy production during the process of thermal phase-separation of multiphase flows is investigated by means of a discrete Boltzmann kinetic model.
Yudong Zhang   +5 more
openaire   +3 more sources

Entropy Region and Network Information Theory [PDF]

open access: yes, 2011
This dissertation takes a step toward a general framework for solving network information theory problems by studying the capacity region of networks through the entropy region.
Sormeh Shadbakht, Shadbakht, Sormeh
core   +1 more source

An Impeller Optimization Method for the High Specific Speed Mixed-Flow Reactor Coolant Pump Applied to Marine Nuclear Power

open access: yesJournal of Marine Science and Engineering, 2023
The reactor coolant pump (RCP) is the only rotating equipment in the primary circuit system of a nuclear power plant and the “heart” of the nuclear reactor.
Qiang Fu   +4 more
doaj   +1 more source

Stealth Entropy Production in Active Field Theories near Ising Critical Points [PDF]

open access: yesPhysical Review Letters, 2020
We address the steady-state entropy production rate (EPR) of active scalar $ϕ^4$ theories, which lack time-reversal symmetry, close to a phase-separation critical point. We consider both nonconserved (Model A) and conserved (Model B) dynamics at Gaussian level, and also address the former at leading order in $ε= 4-d$.
Caballero, Fernando, Cates, Michael E.
openaire   +3 more sources

Entropy production rate as a criterion for inconsistency in decision theory [PDF]

open access: yesJournal of Statistical Mechanics: Theory and Experiment, 2018
Abstract Individual and group decisions are complex, often involving choosing an apt alternative from a multitude of options. Evaluating pairwise comparisons breaks down such complex decision problems into tractable ones. Pairwise comparison matrices (PCMs) are regularly used to solve multiple-criteria decision-making problems, for ...
openaire   +3 more sources

Thermodynamic substantiation of the direction of nonequilibrium processes in triadconjugations of machine parts based on the principles of maximum and minimum entropy

open access: yesПроблеми трибології, 2022
The article gives a thermodynamic substantiation of the direction of nonequilibrium processes in tribocouples of machine parts, in tribosystems, based on the principles of maximum and minimum entropy.
V.V. Aulin   +3 more
doaj   +1 more source

Entropy Production in Phase Field Theories [PDF]

open access: yes, 2019
Allen-Cahn (Ginzburg-Landau) dynamics for scalar fields with heat conduction is treated in rigid bodies using a non-equilibrium thermodynamic framework with weakly nonlocal internal variables. The entropy production and entropy flux is calculated with the classical method of irreversible thermodynamics by separating full divergences.
openaire   +2 more sources

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